Innovate/Spritex/Bullet... What I found searching the web.

[Draco-REX]

Originally Posted by ft_sjo

.. and potentially suffer low-end MAF resolution problems.

True. Though from what I've seen, people who have that level of CFM requirements don't care about low-end, or switch to a MAP-based tuning solution.

[WolfSongX]

Not to drag the quality of this thread down with a fart joke... but dude really looks like he's just pulled his own finger.

[mad_sb]

Originally Posted by mad_sb

Derp, yes But may end up having to start with the smaller pulley / lower boost setup since it will be maf based tune... and it seems i'll be creating my own basemap, that or i can go ahead and swap to a larger maf housing / rescaled maf before hand.

Originally Posted by Draco-REX

I'm pretty sure you can just increase the intake piping and rescale the MAF to move as much air as you want. That's why running a full intake without a tune has the potential to be disasterous.

As for the fuel maps, traditionally Subaru maps are Load vs RPM, with Load calculated: Load = (total g/s airflow) / (rpm) * (60)

g/s is derived from MAF voltage then adjusted by the scaling. So you can, in theory, bump up to a 4" intake and all you'd have to do is adjust the scaling to get the appropriate g/s.

You don't have to calculate load, the ecu does it and you can read the load directly from ram. IBut, yes, it is in Grams / Rev just like other subbies, i used to use a spreadsheet to do the load calc on the dyno after a pull many years ago before i had a logger that did it for me

My concern is more to do with getting the car to the dyno on an ecutek basemap... ecutek and brzedit are not "compatible" so I would have to use whatever canned tune is available, which rules out the possibility of a larger maf housing until i am able to do a BRZedit base map that runs the car.

I could always use the canned ecutek tune to get to the dyno, get some base numbers, get some logs, then head home with the data and create my own base map in brzedit

Originally Posted by ft_sjo

.. and potentially suffer low-end MAF resolution problems.

True, but with a good honeycomb and proper maf housing you can clean up most of that. I have one sitting in my tool chest right now :happy0180:

[Draco-REX]

Originally Posted by mad_sb

You don't have to calculate load, the ecu does it and you can read the load directly from ram. IBut, yes, it is in Grams / Rev just like other subbies, i used to use a spreadsheet to do the load calc on the dyno after a pull many years ago before i had a logger that did it for me

Well you asked if the fuel maps are based on MAF or Speed density. I was providing the complete answer rather than the short one.

[spitfire481]

what are the oiling requirements for these units? self contained im assuming?

[robispec]

Yes.

[industrial]

Man that sprintex kit is one nice looking piece of hardware.

[mad_sb]

Originally Posted by Draco-REX

Well you asked if the fuel maps are based on MAF or Speed density. I was providing the complete answer rather than the short one.

Yeah, sorry, i was asking if the ecutek base maps provided with the kits will be speed density or maf based load.

[SkullWorks]

the ECUtek maps are simply corrected, they do not completely change the firmware so that you can run MAF-less.

HOWEVER, the ECU actually relies on the map sensor for low load low rpm fueling as well as the MAF,...that's why we have a MAP sensor in a MAF car...that is NA...

longstoryshort...you are gonna be fine rescaling the maf with a larger sample area, the MAP sensor should make up for the difference. not to mention since there is a positive displacement SC on top of the manifold now you should be moving more air per RPM anyway, so it's a self remedying problem of sorts.

you will not likely be able to use both ecutek and brzedit on the same ECU, I doubt BRZedit can pull a rom previously edited ECUtek.

[TemeCal]

Originally Posted by spitfire481

what are the oiling requirements for these units? self contained im assuming?

My understanding, is that the service interval is 30k miles...which simply requires an oil change. Sounds pretty maintenance free.

[invisage]

Originally Posted by TemeCal

My understanding, is that the service interval is 30k miles...which simply requires an oil change. Sounds pretty maintenance free.

Browsing through the manual yesterday that is correct (every 50,000km). It also recommended replacing the pulley at the same time.

[robispec]

Originally Posted by TemeCal

My understanding, is that the service interval is 30k miles...which simply requires an oil change. Sounds pretty maintenance free.

And dat sound...your smiles per mile increases as well...

[tom@kartboy]

Originally Posted by robispec

And dat sound...your smiles per mile increases as well...

[mad_sb]

Originally Posted by SkullWorks

the ECUtek maps are simply corrected, they do not completely change the firmware so that you can run MAF-less.

HOWEVER, the ECU actually relies on the map sensor for low load low rpm fueling as well as the MAF,...that's why we have a MAP sensor in a MAF car...that is NA...

longstoryshort...you are gonna be fine rescaling the maf with a larger sample area, the MAP sensor should make up for the difference. not to mention since there is a positive displacement SC on top of the manifold now you should be moving more air per RPM anyway, so it's a self remedying problem of sorts.

you will not likely be able to use both ecutek and brzedit on the same ECU, I doubt BRZedit can pull a rom previously edited ECUtek.

Hmm, I was under the impression ecutek had a full speed density solution but it does not sound like it. I thought maybe they were keeping the maf sensor because the iat sensor is integrated.

I'm familiar with hybrid map maf cars, 4b11t's are like that but the roms have been decoded enough that you can log each load calc and match up the tables so your maf load matches your map load. There is a map based load table in the rom but it looks more like a load compensation table rather than a straight load table... Values at low rpm low manifold pressure (high vacuum) are higher than the values at higher rpm and higher manifold pressure. And it only goes up to 4800 rpm. I'm sure there are more tables that have not be defined yet though.

The stock ecu has a map based port fueling compensation table, so as long as you update to a 2+bar map sensor and update the MAP calibration table you can comp the port fueling.

I don't expect ecutek and brzedit to be compatible. What i'm thinking is i can run around on the ecutek base map to log the tune, make a few pulls on the dyno etc.. Take the log data (ignition timing, engine load, port injection time, di injection time, etc) and build a good enough base map in brzedit to get the car running safely. At that point I would flash back the stock rom with Ecutek and flash my rom with brzedit and start fine tuning.